Shearing or clipping machine.



A. HAWTREY.

SHEARING 0R CLIPPING MACHINE.

APPLICATION FILED APR.10, 1913.

Patented Dec. 14, 1915.

Inventor witnesses I W /Q $2M (&v of

NED @TA Arnr @FFICE.

ARTHUR HAWTREY, OF BUENOS AIRES, ARGENTINA.

SHEARING 0R CLIPPING MACHINE.

Thrill whom it may concern:

Be it known that I, ARTHUR HAw'rREY, a citizen of the United States ofAmerica, residing at 671 Calle Maipu, Buenos Aires, Argentina, haveinvented certain new and useful Improvements in Shearing or ClippingMachines, ofwhich the following is a specification.

This invention relates to machines for shearing or clipping the wool orhair of animals and for similar uses of the type in which oscillatorymembers in conjunction with spherical bearings are employed and in whichalso oscillatory members comprising two rigid fingers and a centralfinger and a tension pin having a fixed bearing base in the casing havebeen proposed or employed.

Heretofore in connection with machines of the type referred to certainobjections have obtained, principally as a resultof the means forapplying the tension being liable to serious wear and depreciationincidental to the great vibration to which the parts are subjected andwhich their construction is unadapted to resist or of their being ofsuch a form that considerable friction occurs in working with aconsequent waste of energy and undue heating of the machine.

The present invention is designed with the principal object of remedyingthe above mentioned defects and to this end consists in providing anovel combination and arrangement of parts whereby the oscillating armwhich operates the cutter is supported and actuated in such a mannerthat the necessary pressure or tension for maintaining cutting contactbetween the combs and cut ters can be applied and maintained in animproved manner. The oscillatory member or lever which comprises rigidouter fingers and a finger adapted to exert pressure or tension on andactuate the cutter, is therefore adapted to maintain its operativerelation to the cutter by means of an adjustable semi-spherical supportarranged at or near the inner end or heel thereof and a tension pinwhereof one end rests upon or against a rigid or immovable seating orbase in the casing of the machine and theother end upon thecenter or.thereabout of the said lever or member.

In order that the said invention may be clearly understood and readilycarried into effect, I will proceed to describe the same its movements.

Specification of Letters Patent. Patgnted D 14 19j] 5 Application filedApril 10, 1913.

Serial No. 760,138.

more fully with reference to the accompanying drawings in which Figure 1is a plan of a shearing or clipping machine having the presentimprovements applied thereto. Fig. 2 is a longitudinal section takenalong the line A-B in Fig. 1. Fig. 3 is a transverse section taken alongthe line CD in Fig. 1. Fig. 4 is also a transverse section similar toFig. 3 illustrating a modified arrangement for effecting the applicationand regulation of the aforesaid tension or pressure.

The casing or metal cover 1 serves as a handle and as a container forthe operating mechanism. The comb 2 is conveniently secured to a seatingat the under side of the front part of the casing;'the cutter 3 beingheld in position on the comb by the oscillatory member or lever arm 4which is provided with two outer rigid horns or fingers cutter. Thecenter of movement of the said member or arm 4: is constituted by abearing 5 adapted to rest on a semi-spherical seating formed or providedon a movable support 6 which extends transversely of the machine and isretained in position by guide pins or screws 7 and actuated by thecentral screw 8. This arrangement, as will be readily understood,enables the support 6 to be moved upward or downward as a nut on thescrew 8. The tension pin 9 bears at or about the center of the saidmember or arm 4; the said pin having a spherical lower end for thatpurpose. The upper end of the pin presents a convex bearing face of asemi-spherical curvature whereof the center is common with that of thespherical part at the lower end of the pin. The bearing for the saidupper end of the tension pin is constituted by a steel disk 10 which isarranged in a plane parallel with that of the comb seating so as toinsure a perfectly even and constant pressure to the member or lever arm4t and thereby to the cutter throughout The said disk which serves as afixed or rigid base for the convex face of the tension pin is retainedin position by means of the bushing 11 which is screwed into the cavityformed in the inner side of the upper part of the casing or cover.

The operating lever 14L whereby the oscillating motion is imparted tothe member 4.

is mounted upon'a flanged bushing 12 which receives the upper end of thecentral screw 8 and which is itself screwed into the upper side of thecasing or cover 1; a screw cap or look nut 13 securing the said bushing"in position, which thereby serves as an axis for the movement of thelever 1%. One end of the latter is formed so as to serve as the race forthe roller 15 carried by the eccentric pin pertaining to the disk 16 onthe shaft 17 common to the type of shearing or clipping machinesreferred to. The other endot'jthe lever 14: is perforated sons to allowof'the passageand free'play through thesaihe 01 tlie' iensioi Pin 9 andisformed'with a 'biiurcat'ed termination adapted to closelyjengagethef'm'ember or lever arm' 4; the close engagement being however of sucha charactei' 'as nottofprevent the saidhnernber' from adjusting itselfto the necessary angles "which it maybe 'requiredto assume 'inre'lationto' the support 6' and tlie cutter 3 in order to compensate forwear or' p'o s'sible-inclinationo fisame. k c p d r c The central screw8 constitutestheprincipal member for effecting the ustriient of thetension or pressure as by rotating'the "'samefin the one or the'otherdirection the sujport is raisedor loweredhnd 'thereby the me'mber'orlever 4Eis causedtoekert'inore 'or less pressure on the'eutter 3, Thesaid screw 8 is" formed or provided with a collar 18 which resides inlarecess pertainingfto v a transverse plate 19 rigidlysecuredin'positionby the guide pins or screws 7. I The casing or cover 1"has anopening at thelower 'sideof suchdiinension as to allow theeasyjn'iounting and'dismounting ofall the internal parts, the saidopening bei'ng providedwith cover plates 20 and 21 secured in'positionin any com enientmanner. Upon withdrawing the guide pins or screws 7 theplates 19, 20 and 21 may be readily detached and the whole of theinternalparts easily dismounted. r 'In Fi'g. 4f the central screw 8 isactuated from the upper side of the casing thelower extremity beingconed and seated in'afcorres'ponding conical shaped cavity formed in"the transverse plate 19. It will thus beseen that the manner of movingthe support 6 ma be varied without altering the principal mechanismwhereby the tension orfpressure is applied to the cutter irrespective ofthe grade of in'clination it'may assume during its movement. Theoscillating operating lever'l i, as' reviously stated, moves rotativly'oroscilla'tjes on the bushing '12vasan aXis f and is actuated by therotation of the eccentric disk 15"carried'by the shaft 17 the lever 14transmitting the resulting "oscillatory movement thereof to the memberor lever 4 means of the bifurcated extremity which engages on thesaidfinember or lever 14: as

liereinb'efore described. As a result of the member or arm 4 bearing onthe semispherical' surface on the support 6 and of the. center of thesaid bearing coinciding with that of. the bushing 12, whatever thedegree of "inclination ofthe said arm the latter and the lever 1d movetogether about the same center; avoiding any sliding or frictionalmovement between the points of contact of the parts during operation. Ifit be desired 'toincrease the pressure between the cutter 3 and comb 2the central screw 8 should be rotated so'asto' rai'se'the support 6;thisfmovement of the latter will have the effect otraisingthe hearing orinner end of theineinberorlever at but as the movement of this memberat" the forward end thereof is l'inriitec l in 'the upward direction bythe tension pin s, it follows that the aforesaid raisinpnor upward forceat this partof the stt'du'neniber, is converted into downward pressure,-Theoperationof tliediflerentparts of the "mechanism "having beendescribed their f inovenients inrel'ation toeach other willnow rf-apparent. v p l WVhafiI claim and desire to' 'secureby Let- "t'ersPatent of the United states is 'lfilriashearingbr clipping machine, the

T n of a comb, a cutter,"anoscil- I terminati- I "nary-s mbaforimparting movement to "said cutter, an adjustable semi-sphericalsupport 'for the inner end of said oscillatory refine itieansf'fmadjusting said's'emispherical "support, fmeans intermediate off'saidberh sp oiistru'ctedfandarranged to maintain ten- "sion" on' saidoscillatory member, andjan. actuatinglev er arranged abovesaidoscillatory meiiibefarid adapted toturn about the same axisfand impartmovement "thereto.

Injashearing or clippingma'chine, the flc'r'iinbiiiat-ibn'ofacomb,ac'utter, an oscillaijt olryffi ember for imparting movement to-*saii;utte1-;an adjustable semi-spherical support' for said oscillatorymember, formed on I aftr'ansverse bar, guides for said support, a flcrewth'readed member for supportingand factuating said semi sphericalsupport, means "constructed and arranged to maintain tension ion saidoscillatory member and an actuating lever arranged above said 'oscillatory mmberand adapted to turn about the "same axis and impart'movementthereto.

In a lshea'ring'or clipping machine, the coiiibination of acomb, acutter,"an oscillatory member 'for imparting movement to *saichc utt er,an'adjustable support for the inner" end of'said"oscillatorymember, ascrew-threaded' supporting and actuating 1 member for" said adjustablesupport, means 'constrlic'tedand arranged to maintain tension on saidoscillatorymember, an actuatinglever'f'or said oscillatorymember, and aflanged bushing for supporting said actuating lever, said bushing alsoconstituting a 'vhich isthus exerted ontlie cutter.

member, a screW for supporting and actuating said semi-sphericalsupport, means constructed and arranged to maintain tension on saidoscillatory member, a bushing arranged above said oscillatory member andadapted to support one end of said screw, a

flange on said bushing, and an actuating lever mounted upon saidbushing, supported 15 by said flange, to turn about an axissubstantially coincident With the axis of said oscillatory member, andimpart movement thereto.

In testimony whereof I aflix my signature 20 in presence of twoWitnesses.

ARTHUR HAWTREY.

Witnesses:

L. MELLERSH-JACKSON, T. SELBY WARDLE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G."

